{"nhtsa_id":10090181,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-02-02","date":"2014-12-05","document_id":"14203","mfr_campaign":null,"replaces":null,"component":"ENGINE; ELECTRICAL SYSTEM; EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH","mfr_system":null,"summary":"14203 - CUSTOMER SATISFACTION PROGRAM. ON CERTAIN VEHICLES, WHEN THE ENGINE IS WARM, THE UNDERHOOD BUSSED ELECTRICAL CENTER (UBEC) HOUSING WILL EXPAND, CAUSING THE HEADLAMP LOW-BEAM RELAY CONTROL CIRCUIT ROUTED WIRE TO BEND SLIGHTLY. AFTER THE WIRE IS REPEATEDLY BENT, IT CAN FRACTURE AND SEPARATE. WHEN THIS OCCURS, THE LOW-BEAM HEADLAMPS WILL NOT ILLUMINATE. AS THE UBEC HOUSING COOLS AND CONTRACTS, THE LOW-BEAM HEADLAMP FUNCTION MAY RETURN. THIS CONDITION DOES NOT AFFECT THE HIGH-BEAM HEADLAMPS, MARKER LAMPS, TURN SIGNALS, DAYTIME RUNNING LAMPS OR FOG LAMPS. LOSS OF LOW BEAM HEADLAMPS WHEN THEY ARE REQUIRED COULD REDUCE THE DRIVER’S VISIBILITY, INCREASING THE RISK OF A CRASH. DEALERS ARE TO INSTALL A JUMPER WIRE.","document":null,"url":"https://open.wenmarpro.com/bulletins/10090181","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"lighting","name":"Lighting","parent":null},{"id":"headlight","name":"Headlights","parent":"lighting"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"CORVETTE","year_from":2008,"year_to":2013,"match":"exact","vehicle_ids":["2008_chevrolet_corvette","2009_chevrolet_corvette","2010_chevrolet_corvette","2011_chevrolet_corvette","2012_chevrolet_corvette","2013_chevrolet_corvette"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}